docs: def _parse_command_line():
      """Configure and parse our command line flags."""
      parser = argparse.ArgumentParser()
      parser.add_argument(
          '--portserver_static_pool',
          type=str,
          default='15000-24999',
          help='Comma separated N-P Range(s) of ports to manage (inclusive).')
      parser.add_argument(
          '--portserver_unix_socket_address',
          type=str,
          default='@unittest-portserver',
          help='Address of AF_UNIX socket on which to listen (first @ is a NUL).')
      parser.add_argument('--verbose',
                          action='store_true',
                          default=False,
                          help='Enable verbose messages.')
      parser.add_argument('--debug',
                          action='store_true',
                          default=False,
                          help='Enable full debug messages.')
      return parser.parse_args(sys.argv[1:])